The area of a circle is 9π ft². What is the circumference, in feet? Express your answer in terms of \piπ.

What is the multiple zero and multiplicity of f(x) = (x ? 3)(x ? 3)(x + 5)? multiple zero is 3; multiplicity is 2 multiple zero is 5; multiplicity is 1 multiple zero is ? 5; multiplicity is 1 multiple zero is ? 3; multiplicity is 2

Is the square root of 4 plus the square root of 16 rational?

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?